Part 1 book Self assessment and review ENT has contents: Anatomy of ear, assessment of hearing loss, lesion of cerebellopontine angle and acoustic neuroma, rehabilitative methods, glomus tumor and other tumors of the ear, anatomy and physiology of nose,... and other contents.
Self Assessment and Review ENT Seventh Edition SAKSHI ARORA HANS Faculty of Leading PG and FMGE Coachings MBBS “Gold Medalist” (GSVM, Kanpur) DGO (MLNMC, Allahabad) India The Health Sciences Publisher New Delhi | London | Philadelphia | Panama Jaypee Brothers Medical Publishers (P) Ltd Headquarters Jaypee Brothers Medical Publishers (P) Ltd 4838/24, Ansari Road, Daryaganj New Delhi 110 002, India Phone: +91-11-43574357 Fax: +91-11-43574314 Email: jaypee@jaypeebrothers.com Overseas Offices J.P Medical Ltd 83 Victoria Street, London SW1H 0HW (UK) Phone: +44 20 3170 8910 Fax: +44 (0)20 3008 6180 Email: info@jpmedpub.com Jaypee-Highlights Medical Publishers Inc City of Knowledge, Bld 235, 2nd Floor, Clayton Panama City, Panama Phone: +1 507-301-0496 Fax: +1 507-301-0499 Email: cservice@jphmedical.com Jaypee Brothers Medical Publishers (P) Ltd 17/1-B Babar Road, Block-B, Shaymali Mohammadpur, Dhaka-1207 Bangladesh Mobile: +08801912003485 Email: jaypeedhaka@gmail.com Jaypee Brothers Medical Publishers (P) Ltd Bhotahity, Kathmandu, Nepal Phone +977-9741283608 Email: kathmandu@jaypeebrothers.com Jaypee Medical Inc 325 Chestnut Street Suite 412, Philadelphia, PA 19106, USA Phone: +1 267-519-9789 Email: support@jpmedus.com Website: www.jaypeebrothers.com Website: www.jaypeedigital.com © 2016, Jaypee Brothers Medical Publishers The views and opinions expressed in this book are solely those of the original contributor(s)/author(s) and not necessarily represent those of editor(s) of the book All rights reserved No part of this publication may be reproduced, stored or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without the prior permission in writing of the publishers All brand names and product names used in this book are trade names, service marks, trademarks or registered trademarks of their respective owners The publisher is not associated with any product or vendor mentioned in this book Medical knowledge and practice change constantly This book is designed to provide accurate, authoritative information about the subject matter in question However, readers are advised to check the most current information available on procedures included and check information from the manufacturer of each product to be administered, to verify the recommended dose, formula, method and duration of administration, adverse effects and contraindications It is the responsibility of the practitioner to take all appropriate safety precautions Neither the publisher nor the author(s)/editor(s) assume any liability for any injury and/or damage to persons or property arising from or related to use of material in this book This book is sold on the understanding that the publisher is not engaged in providing professional medical services If such advice or services are required, the services of a competent medical professional should be sought Every effort has been made where necessary to contact holders of copyright to obtain permission to reproduce copyright material If any have been inadvertently overlooked, the publisher will be pleased to make the necessary arrangements at the first opportunity Inquiries for bulk sales may be solicited at: jaypee@jaypeebrothers.com Self Assessment and Review: ENT First Edition: 2010 Second Edition: 2011 Third Edition: 2012 Fourth Edition: 2013 Fifth Edition: 2014 Sixth Edition: 2015 Seventh Edition: 2016 ISBN: 978-93-85999-53-6 Typeset at JPBMP typesetting unit Printed at India Dedicated to SAI BABA Just sitting here reflecting on where I am and where I started, I could not have done it without you Sai Baba I praise you and love you for all that you have given me and thank you for another beautiful day to be able to sing and praise you and glorify you you are my amazing god Preface “It can be very difficult to sculpt the idea that you have in mind If your idea doesn’t match the shape of the stone, your idea may have to change because you have to accept what is available in the rock” Fevereiro 1999 in Arctic Spirit Dear Students, I wish to extend my thanks to all of you for your overwhelming response to all the six editions of my book I am extremely delighted by the wonderful response shown by the readers for the 6th edition and proving it again as the bestseller book on the subject Thanks once again for the innumerable e-mails you have sent in appreciation of the book With the experience, which I have gained working as a faculty and being so closely associated with PG Aspirants, it’s not how much you study which matters rather, its how wisely you study which matters the most Since we are not human prodigies (at least I don’t consider myself as one and 90% PG Aspirants are somewhat similar), we cannot remember everything about 19 subjects We need to have a strategic plan to crack AIPG (NEET), which means we have to choose some subjects where we can be sure of not making mistakes And believe me friends- ENT is one of those subjects, where if you put efforts, it will not let you down With the help of this book, I am just helping you to cake walk through the subject How to Use This Book Intern and PG Aspirants: The scarcity of time which you have and since you already done ENT in your third year, I would suggest first read all the New Pattern Questions (Marked as N within the theory) See all diagrams, instruments and previously asked questions with answers Initially not read the theory, if you are unable to answer the question correctly of some particular topic, then read the theory of that topic from the book Although, I strongly recommend you to go through anatomy of ear, nose, larynx and pharynx along with their tumors from this book Undergraduates and Foreign Graduates: Read the book cover to cover, not miss out anything, this book will not only lay a strong foundation for PG Entrance but will also help you in your undergraduate theory and viva exams Salient Features of 7th Edition Pretext: Detailed yet concise pointwise overview of the topic with many flow charts, tables and mnemonics for better understanding and retaining New Pattern Questions: To give students an idea of the new questions which could be formed, over 500 new pattern questions have been added, along side the theory This will help you to reinforce important points from the topic These questions are the potential questions for upcoming exams Instruments and Diagrams: All important instruments related to surgery, diagrams, X-rays, CT scans have been given along with the topic This is to ensure that students not miss on any important information and can correlate with them MCQs: All MCQs of AIIMS up to November 2015, PGI up to May 2015, and state-based MCQs up to February 2016 have been included Authentic Explanations: Explanations from standard and recent edition textbooks have been provided for each answer Different and controversial MCQs have been explained in details, discussing each option and excluding the incorrect one I am thankful to Shri Jitendar P Vij (Group Chairman) for allowing me to use illustrations from eminent ENT Textbooks (like Essentials of ENT by Mohan Bansal, TB of ENT by Mohan Bansal and Diseases of ENT by BS Tuli, 2nd Edition) of Jaypee Brothers Medical Publishers (P) Ltd, New Delhi, India Though at most care has been taken to avoid all possible errors, some minor errors might have crept in, inadvertently I request the readers to kindly point out the same and give their valuable suggestions or feedbacks by e-mail I wish you all the very best for your upcoming exams and for your bright future New Delhi Dr Sakshi Arora Hans April 2016 delhisakshiarora@gmail.com Acknowledgements Over the years (even if it is 8-10 years), writing acknowledgement for my books, have become an opportunity for self-reflection My Family � Dr Pankaj Hans, my better-half who has always been a mountain of support and who is to a large measure, responsible for what I am today His calm, consistent approach towards any work, brings some calmness in my hasty, hyperactive, and inconsistent nature � My Father: Shri H.C Arora, who has overcome all odds with his discipline, hardwork, and perfection � My Mother: Smt Sunita Arora, who has always believed in my abilities and supported me in all my ventures – be it authoring a book or teaching � My in Laws (Hans family): For happily accepting my maiden surname ‘Arora’ and taking pride in all achievements � My Brothers: Mr Bhupesh Arora and Sachit Arora, who encouraged me to write books and have always thought (wrong although) their sister is a perfectionist � My Daughter, Shreya Hans (A priceless gift of god): For accepting my books and work as her siblings (Although now she is showing signs of intense sibling rivalry!!) My Teachers � Dr Manju Verma (Prof & Head, Gynae & Obs, MLN MC, Allahabad) and Dr Gauri Ganguli (Prof & Ex-HEAD, Gynae & Obs, MLNMC, Allahabad) for teaching me to focus on the basic concepts of any subject My Colleagues: I am grateful to all my seniors, friends and colleagues of past and present for their moral support Dr Manoj Rawal Dr Ruchi Aggrawal Dr Parminder Sehgal Dr Prakash Khatri Dr Pooja Aggrawal Dr Shalini Tripathi Dr Amit Jain Dr Abhishek Singh Dr Parul Aggrawal Jain Dr Kushant Gupta Dr Sonika Lamba Rawal Dr Sonia Bhatt Directors of PG Entrance Coaching, who helped me in realizing my potential as an academician � Dr Vineet Singh: Director, MIST Coaching � Mr Sundar Rao: Director, SIMS Academy My Publishers—Jaypee Brothers Medical Publishers (P) Ltd � Shri Jitendar P Vij (Group Chairman) for being the best in the industry Mr Ankit Vij (Group President) for having constant faith in me and all my endeavours � Ms Chetna Malhotra Vohra (Associate Director—Content Strategy) for working hard with the team to achieve the deadlines � The entire MCQs team for working laborious hours in designing and typesetting of the book � Last but not the least My sincere thanks to all FMGE/UG/PG students, present and past, for their tremendous support, words of appreciation rather I should say e-mails of encouragement and informing me about the corrections, which have helped me in the betterment of the book Dr Sakshi Arora Hans delhisakshiarora@gmail.com Contents SECTION I: EAR Anatomy of Ear Physiology of Ear and Hearing 32 Hearing Loss 40 Assessment of Hearing Loss 50 Assessment of Vestibular Function 71 Diseases of External Ear 82 Diseases of Middle Ear 92 Meniere’s Disease 124 Otosclerosis 132 10 Facial Nerve and its Lesions 141 11 Lesion of Cerebellopontine Angle and Acoustic Neuroma 157 12 Glomus Tumor and Other Tumors of the Ear 164 13 Rehabilitative Methods 170 14 Miscellaneous 177 SECTION II: NOSE AND PARANASAL SINUSES 15 Anatomy and Physiology of Nose 183 16 Diseases of External Nose and Nasal Septum 196 17 Granulomatous Disorders of Nose, Nasal Polyps and Foreign Body in Nose 209 18 Inflammatory Disorders of Nasal Cavity 222 19 Epistaxis 231 20A Diseases of Paranasal Sinus—Sinusitis 241 20B Diseases of Paranasal Sinus—Sinonasal Tumor 260 SECTION III: ORAL CAVITY 21 Oral Cavity 269 SECTION IV: PHARYNX 22 Anatomy of Pharynx, Tonsils and Adenoids 301 23 Head and Neck Space Inflammation and Thornwaldt’s Bursitis 319 24 Lesions of Nasopharynx and Hypopharynx including Tumors of Pharynx 327 25 Pharynx Hot Topics 339 viii Self Assessment and Review: ENT SECTION V: LARYNX 26 Anatomy of Larynx, Congenital Lesions of Larynx and Stridor 347 27 Acute and Chronic Inflammation of Larynx, Voice and Speech Disorders 364 28 Vocal Cord Paralysis 380 29 Tumors of Larynx 390 SECTION VI: OPERATIVE PROCEDURE 30 Important Operative Procedures 407 SECTION VII: RECENT PAPERS AIIMS November 2015 421 AIIMS May 2015 423 PGI May 2015 424 PGI November 2014 428 PGI May 2014 431 SECTION VIII: COLOR PLATES Color Plates iii–xvi Section I EAR Anatomy of Ear Otosclerosis Physiology of Ear and Hearing 10 Facial Nerve and its Lesions Hearing Loss 11 Lesion of Cerebellopontine Assessment of Hearing Loss Angle and Acoustic Assessment of Vestibular Neuroma Function 12 Glomus Tumor and Other Diseases of External Ear Tumors of the Ear Diseases of Middle Ear 13 Meniere’s Disease 14 Miscellaneous Rehabilitative Methods 201 CHAPTER 16 Diseases of External Nose and Nasal Septum EXPLANATIONS AND REFERENCES TO NEW PATTERN QUESTION N1 Ans is d i.e Deviated dorsum and septa Ref Dhingra 6/e, p 143, Essentials of ENT, Mohan Bansal, 1/e, P 197 In crooked nose, the midline of dorsum (obviously along with septa) from frontonasal angle to the tip of nose is curved in a C- or S-shaped manner N2 Ans isa i.e Crooked nose Ref Essentials of ENT, Mohan Bansal, 1/e, p 223 This is a typical presentation of crooked nose Fig 16.5: Nasal bridge is S-shaped in crooked nose It is straight but deviated to one side in deviated nose N3 Ans is c i.e Most commonly due to diabetes mellitus Ref TB of ENT, Hazarika 3/e, p 268, Dhingra 6/e, p 144 Remember: Sebaceous glands are a variety of holocrine glands Rest all discussed in text N4 Ans is a i.e Hypertrophy of sebaceous gland Ref Dhingra 6/e, p 144 See the text for explanation N5 Ans is a i.e Biopsy Ref TB of ENT, Hazarna, 3/e p 263 In the question, as infant is presenting with a polypoidal compressible mass near the glabella, it should raise the suspision of a frontal encephalocele In all such cases, remember never a Biopsy: as it can lead to CSF Rhinorrhea NOTE yyAn encephalocele cele can present as pulsatile swelling in the midline at the root of nose glabella (Naso frontal variety), side of nose (Nasoethmoidal variety) or on the anterior middle aspect of the orbit (naso-orbital variety) N6 Ans is b i.e Nasal encephalocele Ref TB of ENT, Hazarika 3/e, p 263 Furstenberg test: Bilateral compression of internal jugular vein leading to increase in size of mass is positive Furstenberg test, seen in case of nasal encephalocele In nasal gliomas and dermoid cyst—Furstenberg test is negative N7 Ans is b i.e CT Scan A solitary polypoidal mass arising from roof of the nose in an infant should raise the suspicion of encephalocele Remember—M/C age of presentation of encephalocele is 15-24 months of age In such cases biopsy should never be attempted as discussed it can result in CSF rhinorrhea First investigation done is CT scan IOC is MRI 202 SECTION II Nose and Paranasal Sinuses N8 Ans is b i.e Freer’s incision Ref TB of ENT, Hazarika 3/e, p 284 The incision shown in the plate is Freer's incision Fig 16.6: This is Killian's incision N9 Ans is b i.e It resolves itself Ref Essentials of ENT, Mohan Bansal, p 231, 232 Septal hematoma should not be left to resolve spontaneously as the blood supply of septal cartilage is deprived in this case Thus surgical management as outlined in the text should be performed as early as possible N10 Ans is a i.e Immediate evacuation Ref Essentials of ENT, Mohan Bansal, p 231, 232 See explanation of Q N9 N11 Ans is b i.e Septal perforation Complications of Septal Abscess Ref Essentials of ENT, Mohan Bansal, p 232 yySaddle nose deformity: The necrosis of septal cartilage causes depression of the nasal dorsum in the supratip area It needs augmentation rhinoplasty, which is performed after 2-3 months yySeptal perforation due to necrosis of septal flaps yyMeningitis yyCavernous sinus thrombosis 203 CHAPTER 16 Diseases of External Nose and Nasal Septum QUESTIONS a 1 b 10 Rhinophyma is associated with: [AI 07] [AP 96, UP 01] a Hypertrophy of the sebaceous glands b Hypertrophy of sweat glands sss c Hyperplasia of endothelial cells d Hyperplasia of epithelial cells True about rhinophyma: [AI 01] a Premalignant b Common in alcoholics c Acne rosacea d Fungal etiology e Treatment is shaving, dermabrasion and skin grafting Most common presentation of infant with bilateral choanal atresia: [AIIMS 96] a Difficulty in breathing b Dysphagia c Smiling d Difficulty in walking Choanal atresia is associated with: [PGI 08] a Colobamatous blindness b Heart disorder c Renal anomaly d Ear disorder e CNS lesion Which of the following procedure is helpful in diagnosis of choanal atresia: [PGI May 2012] a Anterior rhinoscopy b Passing red rubber catheter c Breath sounds by stethoscope d Endoscopy of nose e Acoustic rhinometry All are true about nasolabial cysts except: [AIIMS Nov 08] a They are B/L b They present in adults c Derived from odontogenic epithelium d Strong female predilection Depressed bridge of the nose may be due to any of the following except: [DNB 03] a Leprosy b Syphilis c Thalassemia d Acromegaly A crooked nose is due to: [PAL 2000] a Deviated dorsum but tip midline b Depressed dorsum c Humped dorsum d Deviated dorsum and tip Percentage of newborns with deviation of nasal septum: a 2% b 10% [PGI 93] c 20% d 60% Features associated with DNS include all of the following except: [AI 98] a Epistaxis b Atrophy of turbinate c Hypertrophy of turbinate d Recurrent sinusitis DNS may be associated with all the following except: a Recurrent sphenoiditis b Acute otitis media c Hypertrophy of the inferior turbinate d Recurrent maxillary sinusitis 11 For deviated nasal septum, surgery is required for: a Septal spur with epistaxis [PGI 01] b Marked septal deviation c Persistent rhinorrhea d Recurrent sinusitis e Prolonged DNS 12 All of the following true of septoplasty operation for DNS except: [UPSC] a Indicated in septal deviation b Mucoperichondrium is removed c Preferably done after 16 years of age d Done in some cases of epistaxis 13 Alternative for SMR: [DNB 01] a Tympanoplasty b Septoplasty c Caldwell-Luc operation d Turboplasty 14 Killian’s incision is used for: [TN 04] a Submucous resection of nasal septum b Intranasal antrostomy c Caldwell-Luc operation d Myringoplasty 15 Which is not done in septoplasty: [St Johns 02] a Elective hypotension b Throat pack c Nasal preparation with 10% cocaine d None 16 Which of the following surgery is not contraindicated below 12 years of age? [MH 03] a Rhinoplasty b FESS c SMR d Septoplasty 17 To prevent synachiae formation after nasal surgery, which one of the following packings is the most useful: a Mitomycin [AIIMS Nov 04] b Ribbon gauze c Ribbon gauza with liquid paraffin d Ribbon gauza steroids 18 True about septal hematoma is: [PGI 02] a Occurs due to trauma b Can lead to saddle-nose deformity c Conservative treatment d May lead to abscess formation 19 Bony septal perforation occurs in: [Karnataka 95] a TB b Leprosy c Syphilis d Sarcoidosis 20 Septal perforation is not seen in: [DNB 02] a Septal abscess b Leprosy c Rhinophyma d Trauma 21 Perforation of palate is/are seen with [PGI Nov 2012 a Minor aphthous ulcers b Major aphthous ulcers c Tertiary syphilis d Cocaine abuse 204 SECTION II Nose and Paranasal Sinuses 22 The etiology of anterior ethmoidal neuralgia is: [AIIMS 03] a Inferior turbinate pressing on the nasal septum b Middle turbinate pressing on the nasal septum c Superior turbinate pressing on the nasal septum d Causing obstruction of sphenoid opening 23 Cottle’s test tests the patency of the nares in: [JIPMER] a Atrophic rhinitis b Rhinosporidiosis c Deviated nasal septum d Hypertrophied inferior turbinate 24 Most common location of nasal hemangioma: a Nasal septum [PGI May 2013] b Inferior turbinate c Vestibule d Uncinate process e Nasopharynx 25 After laproscopic appendicectomy, patient had fall from bed on her nose after which she had swelling in nose and difficulty in breathing Next step in management: a I/V antibiotics for 7–10 days [AIIMS May 2013, 07] b Observation in hospital c Surgical drainage d Discharge after days and follow up of the patient after weeks 26 A year old child is brought to the hospital with a compressible swelling at the root of nose, most likely diagnosis is: [AIIMS 1999] a A V malformation b Lacrimal sac cyst c Ethmoid sinus cyst d Meningoencephalocele EXPLANATIONS AND REFERENCES a Ans is a i.e Hypertrophy of the sebaceous glands TB of Mohan Bansal, p 292 b Ans is c and e i.e Acne rosacea; and Treatment is shaving, dermabrasion and skin grafting Ref Dhingra 6/e, p 144; TB of Mohan Bansal 1/e, p 292 yy Rhinophyma is a slow-growing benign tumor which occurs due to hypertrophy of the sebaceous glandsQ of the tip of the nose yy Seen in long standing cases of acne rosacea.Q yy Mostly affects men past middle age yy Presents as a pink, lobulated mass over the nose Treatment yy Paring down the bulk of the tumor with a sharp knife, or carbon dioxide laser or scalpel (dermabraions), and the area is allowed to re-epithelize yy Sometimes tumor is completely excised and the raw area is covered with skin graft Ans is a i.e Difficulty in breathing Ref Turner 10/e, p 379; Dhingra 6/e, p 163; TB of Mohan Bansal, p 337 yy Choanal atresia is usually U/L If it occurs bilaterally the neonate presents with difficulty in breathing as infant is a nose breather and does not breathe from mouth The neonate may have asphyxia and bilateral blockage of nose that also makes suckling difficult yy U/L atresia presents with nasal obstruction including snoring but goes unidentified till adult life Ans is a, b, d and e i.e Colobamatous blindness; Heart disorder; Ear disorders; and CNS lesion Ref Scott Brown 7/e, Vol p 1071; Dhingra 6/e, p 163; OP Ghai and 7/e, p 336,337 yyChoanal atresia is associated with CHARGE syndrome: Cloboma of eye, Heart defects, Choanal Atresia, Retarded growth, Genital defects and Ear defects Ans is b, c, d and e i.e Passing red rubber catheter, breath sounds by stethoscope, endoscopy of nose and acoustic rhinometry “Structure normally seen on posterior rhinoscopy are choanal polyp or atresia” Dhingra 5/e, p 385 “Choanal atresia: Posterior rhinoscopy may be undertaken in older children and will show the occlusion.” Turner 10/e, p 380 Thus posterior rhinoscopy and not anterior rhinoscopy are useful in the diagnosis of choanal atresia “Acoustic rhinometry is a new technique which evaluates nasal obstruction by analysing reflections of a sound pulse introduced via the nostrils The technique is rapid, reproducible, non-invasive and requires minimal cooperation from the subject A graph of nasal cross-sectional area as a function of distance from the nostril is produced, from which several area and volume estimates of the nasal cavity can be derived The role of acoustic rhinometry in diagnosis is somewhat limited compared to nasal endoscopy, but it is useful for nasal challenge and for quantifying nasal obstruction It is helpful in evaluating childhood nasal obstruction, as it is well tolerated by children as young as years old-a group of patients to whom objective tests have hitherto been difficult to apply.” —www.ncbi.nim.nih.gov/ /PMC 129 Ans is c i.e Derived from odontogenic epithelium Ref http://www.maxillofacialcentre.com./Bondbook/softissue/nasolabialcyst.html#introduction; Scott Brown 7/e, Vol p 1320; Textbook of ENT, Hazarika, p 367 205 CHAPTER 16 Diseases of External Nose and Nasal Septum Nasolabial Cysts/Nasoalveolar Cyst/Klestadt's Cyst is a rare non odontogenic cyst which occurs in the region of nasolabial fold It may arise from epithelial entrapment in the line of fusion between medial and lateral nasal process during the development of nose and cheek (hence also called epithelial inclusion cyst) or may arise as epithelial remnants of nasolacrimal duct yy Female >Male yy Bilateral in approximately 10% of all cases yy Usually present in 4th and 5th decades of life yy It presents as a smooth and soft bulge in the region of nasolabial fold yy Large cyst obliterates the nasolabial sulcus yy Treatment is by surgical excision using sublabial approach yy It Ans is d i.e Acromegaly Ref Dhingra 6/e, p143 Depressed nasal bridge results from sagging of the bridge of nose either due to injury or infection of osseus or cartilaginous part of the bridge of nose Causes of depressed nose/saddle nose are: H = Hematoma O = Operative, i.e excessive removal of septum during submucous resection T = Trauma S = Syphilis A = Abscess L = Leprosy T = Tuberculosis (Mnemonic – HOT SALT) Ans is a i.e Deviated dorsum but tip midline Ref Dhingra 6/e, p 143; Textbook of Mohan Bansal, p 291 yy In crooked nose, (Fig 16.1) the dorsum of nose is deviated but tip is in midline yy In a deviated nose, both dorsum and tip are deviated yy Saddle nose is depressed nasal dorsum which may involve only cartilaginous or both bony and cartilaginous components yy Humped nose, there is a presence of hump on nose NOTE Both crooked nose and saddle nose are managed by septo-rhinoplasty whereas humped nose is managed by reduction rhinoplasty Ans is d i e 60% yy Around 60% of children are born with some degree of nasal deviation Ans is b i.e Atrophy of turbinate 10 Ans is a i.e Recurrent sphenoiditis Ref Turner 10/e, p 21 Ref Dhingra 6/e, p 149; Tuli 1/e, p 153; Textbook of Mohan Bansal 1/e, p 334,335 206 SECTION II Nose and Paranasal Sinuses NOTE yyIn deviated nasal septum, the nasal chamber on the concave side of the nasal septum is wide and shows compensatory hypertrophy of turbinates and not atrophy yyThe sphenoid sinus opens in the sphenoethmoid recess near the roof of nasal cavity and this opening is not affected by DNS 11 Ans is a, b, c and d i.e Septal spur with epistaxis; Marked septal deviation; Persistent rhinorrhea; and Recurrent sinusitis Ref Dhingra 6/e, p 413, 415; Tuli 1/e, p 507, 2/e, p 516 Indications for Surgery in DNS yy Persistent unilateral nasal obstruction and recurrent headaches yy Deviation causing recurrent sinusitis or otitis media yy Recurrent epistaxis from septal spur yy Access for operation in polypectomy with DNS yy As a part of septorhinoplasty for cosmetic correction of external nasal deformities yy As a approach to hypophysectomy NOTE If instead of marked septal deviation, the option could have been only 'septal deviation' then remember minor degree of septal deviation not causing any symptoms does not require any treatment 12 Ans is b i.e Mucoperichondrim is removed Ref Dhingra 6/e, p 413 13 Ans is b i.e Septoplasty 14 Ans is a i.e Submucous resection of nasal septum 15 Ans is d i.e None ref read below yy As discussed in the text, septoplasty is a conservative procedure with less complications yy Hence preferred surgery these days Here only the deviated part of cartilaginous septum is removed (where as in SMR – which is a radical procedure, entire cartilaginous septum is removed) Incision used for septoplasty is Freer incision For SMR – Killian Incision Intranasal Operations ¾¾ “Intranasal operations are polypectomy, septoplasty, rhinoplasty and functional endoscopic sinus surgery Either a laryngeal mask or a cuffed endotracheal tube may be used with a throat pack, depending on the anesthetist’s confidence, the surgeon, the amount of blood loss and the duration of surgery A flexible laryngeal mask or south-facing preformed tube allows the airway to be secured away from the nose ¾¾ Topical nasal vasoconstriction is extremely useful and may be applied by the anesthetist or surgeon Commonly used vasoconstrictors include 5–10% cocaine, cocaine paste, xylometazoline or ephedrine drops or spray, Moffett’s solution, or dental cartridge injection of local anesthetic with epinephrine (adrenaline) 1:80,000 Vasocontstriction by block of the sphenopalatine ganglion, which carries the vasodilator fibers to the nasal blood vessels, has also been described ¾¾ Surgery is easier with controlled hypotension Profuse bleeding may cause the operation to be abandoned.” Ref Lees Synopsis of Anaesthesia 13/e, pp 734,735 Intraoperative and Postoperative Considerations ¾¾ “The most important consideration of nasal surgery is achieving profound vasoconstriction in the nares to minimize and control bleeding This vasoconstriction can be achieved with cocaine packs, local anesthetics, and epinephrine infiltration Since these drugs have a profound effect on the cardiovascular system, a careful monitoring of the patients cardiovascular functioning is essential, especially for older patients or patients with known cardiac disease A vasoconstrictor can also precipitate dysrhythmias ¾¾ A moderate degree of controlled hypotension combined with head elevation decreases bleeding in the surgical site Blood may passively enter the stomach Placing an oropharyngeal pack or suctioning the stomach at the conclusion of surgery may attenuate postoperative retching and vomiting.” Current Otolaryngology 2/e, p 175 ¾¾ Thus in any nasal surgery: ––Elective hypotension ––Throat pack all can be done ––Nasal preparation with 10% cociane 16 Ans is b i.e FESS yy Amongst all options, FESS is the only surgery which can be performed before 17 years Remember ideally none of the forms of septal surgery can be performed before 17 years Still in rarest circumstances, septal surgery has to performed in children septoplasty is done and never SMR 17 Ans is a i.e Mitomycin Ref Journal of Laryngology and Otology 06, Vol 120, p 921-923 ISN 00222151 yy After Nasal surgery it has been seen that mitomycin drops applied over nasal mucosa decrease nasal synechiae formation yy This is the newer approach and several trials are being done on it but our standard textbooks have not yet included it 207 CHAPTER 16 Diseases of External Nose and Nasal Septum yy “The nasal cavities are packed with ribbon gauze impregnated with Vaseline or liquid paraffin to prevent its sticking to nasal mucosa.” yy “Ribbon gauze impregnated with petroleum jelly or bismuth iodoform paraffin paste (BIPP) is inserted in the entire length of the nasal cavity in an attempt to tamponade the bleeding.” – Scott Brown 7/e, p 1602 18 Ans is a, b and d i.e Occurs due to trauma; Can lead to saddle nose deformity; and May lead to abscess formation See text for explanation Ref Dhingra 6/e, p 150; TB of Mohan Bansal, p 336 19 Ans is c i.e Syphilis 20 Ans is c i.e Rhinophyma 21 Ans is c and d i.e Tertiary syphilis and cocaine abuse Ref Dhingra 6/e, p 151; Scott Brown Otolaryngology 7/e, Vol 2, Chapter 124, p 1583 Septal Perforation Traumatic (m/c cause) Surgical trauma Pathological a Septal abscess b Nasal myiasis c Rhinolith d Lupus vulgaris e TB f Leprosy g Syphilis h Wegner’s granuloma Idiopathic i Rhinoscleroma j Tumors of nasal septum, e.g Chondrosarcoma Also know: Recreational drugs like crack or cocaine snorted nasally are becoming increasingly common cause of septal necrosis – Scotts Brown 7/e, Vol 2, p 1592 Note: Cause of Perforation of: Bony septum Cartilaginous septum Whole septum Syphilis yyLupus yyLeprosy yyTuberculosis Wegner’s granuloma (which includes bony septum also) 22 Ans is b i.e Middle turbinate pressing on the nasal septum Ref Turner 10/e, p 66; Dhingra', 6/e, p 449 Sluder's neuralgia or the anterior ethmoidal syndrome is pain around the bridge of the nose radiating into the forehead It is said to originate from the middle turbinate (part of ethmoid bone) pressing on the deviated septum This is a rare cause of headache and also k/a contact point headache 23 Ans is c i.e Deviated nasal septum Ref Dhingra 6/e, p 149; TB of Mohan Bansal, p 287 Cottle test: It is used to test nasal obstruction due to abnormality of nasal valve as in case of deviated nasal septum In this test, cheek is drawn laterally while the patient breathes quietly If the nasal airway improves on the test side, the test is positive, and indicates abnormality of the vestibular component of nasal valve Also Know Other tests for checking patency of nasal cavities yy Spatula test yy Cotton wool test Various Tests of ENT Test Condition yyABLB test of fowler yyTo test positive recruitment as in Meniere’s disease and presbycusis yyBing test and Chimani-Moos test yyTuning fork test to detect hearing loss yyDoerfler-Stewart test yyTo detect malingering yyErhard’s test yyGault’s test yyCrowe-Beck test yyDone in lateral sinus thrombosis yyTobey-Ayer test (Queckenstedt’s) yyDone in lateral sinus thrombosis 208 SECTION II Nose and Paranasal Sinuses 24 Answer is a, i.e Nasal septum Ref Textbook of ENT, Hazarika 3/e, p 371 Nasal Hemagiomas: yy Hemangioma and angioma are common in nasal septum yy It can also arise from turbinates, nasopharynx and rarely external nose (nasal tip is M/C site in external nose) yy M/C features – Nasal obstruction and epistaxis yy Management – Laser excision 25 Ans is c i.e incision and drainage Ref Dhingra 6/e, p 150 She has possibly developed septal hematoma A septal hematoma has to be drained as early as possible (Generally within 72 hrs) or else it can lead to necrosis of septal cartilage and loss of support of dorsum leading to sadding of nose It can also get infected and lead to formation of septal abscess 26 Ans is d i.e is Meningoencephalocele Ref Read below Two year child with compressible swelling at the root of nose is most likely a Meningoencephalocele Lacrimal sac cyst occurs as a compressible swelling near the medial canthus and not root of nose Ethmoid cyst (mucocele) presents as a swelling at the medial quadrant of orbit pushing the orbit forwards and laterally AV malformation is a congenital abnormal connection between arteries and veins, bypassing the capillary system These are largely found in internal organs and is rare at this site ... jaypee@jaypeebrothers.com Self Assessment and Review: ENT First Edition: 2 010 Second Edition: 2 011 Third Edition: 2 012 Fourth Edition: 2 013 Fifth Edition: 2 014 Sixth Edition: 2 015 Seventh Edition: 2 016 ISBN: 978-93-85999-53-6... Delhi 11 0 002, India Phone: + 91- 11- 43574357 Fax: + 91- 11- 43574 314 Email: jaypee@jaypeebrothers.com Overseas Offices J.P Medical Ltd 83 Victoria Street, London SW1H 0HW (UK) Phone: +44 20 317 0 8 910 ... 30 mm2 c 40 mm2 d 45 mm2 17 Lever ratio of tympanic membrane is: [UP 01] a 1. 4 1 b 1. 3 1 c 18 .2 1 d 1. 5 1 18 “Cone of light” is due to: [AIIMS 96] a Malleolar fold b Handle of malleus c Anterior